Table 2 Different studies comparing the slow preservation and/or vitrification of day 5 and day 6 blastocysts in terms of survival after warming, implantation and pregnancy rates
From: Factors affecting the outcome of human blastocyst vitrification
| Â | Slowly frozen Day 5 Blastocysts | Slowly frozen Day 6 Blastocysts | Vitrified Day 5 Blastocysts | Vitrified Day 6 Blastocysts |
|---|---|---|---|---|
Mukaida et al. 2003[9] | Â | Â | Survival 87% | Survival 55% |
Stehlik et al. 2005[12] | Survival 83.1% Pregnancy rate 16.7% | Survival 89.5% Pregnancy rate 18.5% | Survival 100% Pregnancy rate 50% | Survival 100% Pregnancy rate 33% |
Liebermann & Tucker 2006[13] | Survival 91.4% Implantation 29.6% Pregnancy rate 42.8% | Survival 94.8% Implantation 28.2% Pregnancy rate 43.1% | Survival 95.9% Implantation 33.4% Pregnancy 48.7% | Survival 97.5% Implantation 25.9% Pregnancy 42.8% |
Kader et al. 2008[36] | DNA integrity index: 94.76% ± 4.70 | DNA integrity index: 90.87% ± 6.16 | DNA integrity index: 84.36% ± 8.76 | DNA integrity index: 77.61% ± 16.65 |